吊缸时，最后阶段的工作是（）。

【名词&注释】

可靠性(reliability)、业务水平(professional level)、重要意义(significance)、动力装置(power plant)、管理人员

[单选题]吊缸时，最后阶段的工作是（）。

A. 拆卸与清洗
B. 检测与修理
C. 安装与调试
D. 验收学习

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学习资料：

[单选题]船舶营运期间，（）对保证动力装置的可靠性有重要意义。人为故障比例增加就是证明。

A. 管理人员业务水平
B. 管理人员思想水平
C. 维修性检查
D. A+B

[单选题]一般（）为双舵双桨。

A. 远洋及近海商船
B. 客船和军舰
C. 内河中、小船舶
D. 远洋考察船

[单选题]The quality of the fuel oil and lube oil （）, Im afraid.

A. has much to do with the operation of the engine and its life
B. have much to do with the operation of the engine and its life
C. has much doing with the operation of the engine and its life
D. have much doing with the operation of the engine and its life

[单选题]Operating a diesel engine for prolonged periods, with a closed freshwater cooling system, at temperatures lower than the normal design temperature can cause （）.

A. the formation of sulfuric acid
B. a decrease in lube oil viscosity
C. a decrease in cooling water pH
D. a thermostat failure

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